Samson 2405 - Decommissioning and Removal; Decommissioning; Removing the Valve from the Pipeline

EB 2520 EN 27
Decommissioning and removal
7 Decommissioning and
removal
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equip-
ment. Improper opening can lead to bursting
of the valve.
− Before starting any work on the control
valve, depressurize all plant sections af-
fected as well as the valve.
− Drain the process medium from all the
plant sections affected as well as the valve.
− Wear personal protective equipment.
Risk of personal injury due to residual pro-
cess medium in the valve.
While working on the valve, residual me-
dium can ow out of the valve and, depend-
ing on its properties, cause personal injury,
e.g. (chemical) burns.
Wear protective clothing, safety gloves and
eye protection.
Risk of burn injuries due to hot or cold com-
ponents and pipeline.
Valve components and the pipeline may be-
come very hot or cold. Risk of burn injuries.
− Allow components and pipelines to cool
down or warm up to the ambient tempera-
ture.
− Wear protective clothing and safety gloves.
DANGER
!
WARNING
!
WARNING
!
7.1 Decommissioning
To decommission the control valve for service
and repair work or disassembly, proceed as
follows:
1. Closetheshut-offvalveontheupstream
side.
2. Closetheshut-offvalveonthedown-
stream side.
3. Completelydrainthepipelinesand
valve.
4. Depressurize the plant.
5. If necessary, allow the pipeline and reg-
ulator components to cool down or warm
up to the ambient temperature.
7.2 Removing the valve from
the pipeline
1. Put the regulator out of operation (see
section7.1).
2. Unbolttheangedjoint.
3. Remove the valve from the pipeline.